Underground telegraph-wire conduit



(No Model.)

A. SLOAN.

UNDERGROUND TELEGRAPH WIRE GONDUIT.

No. 274,522. Patented Mar.27,1883.

Wiknes ses Inventor,

UNITED STATES PATENT OFFICE.

ALEXANDER SLOAN, OF NE\VARK,-NE\V JERSEY, ASSIGNOR OF ONE-HALF TO EDWIN J. HUME, OF HYDE PARK, MASSACHUSETTS.

UNDERGROUND TELEGRAPH-WIRE CONDUIT.

SPECIFICATION forming part of Letters Patent No. 274,522, dated March 27, 1883.

Application filed February 12, 1883. (No model.)

To all whom it may concern Be'it known that I, ALEXANDER SLOAN, of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Underground Telegraphire Conduits, of which the following is a specification.

The object of my invention is to provide a. cheap, simple, convenient,compact, and efli- 1o cient device for laying, ilisulating, and protecting underground telegraph-wires, which will permit of their inspection and repair in a most expeditious manner; and it consists in the construction, combination, and arrange- 1 ment of the several parts oi'the device, as hereinafter more fully described, and set forth in the claims- Figure 1 represents a sectional elevation of the end of a pipe for retaining and insulating go underground telegraph-wires embodying my invention. Fig. 2 represents a sectional side elevation of the same.

A represents a pipe, provided at each end with flanges B, through which screw-bolts may be inserted to connect the pieces or sections together, or in any other manner desired. Eachpiece or section of pipe has longitudinal flanges E upon opposite sides thereof, the pipe being formed in two halves, which are adapted 0 to be placed together and secured in position by screw-bolts passing through the said longitudinal flanges E, or in any other suitable manner.

The longitudinal sections are provided near each end with internal notches or cavities,

into which the projecting ends 0 of the supportingfratne D fit, said frame D being constructed of two or more concentric circles or portions, 11, intersected by two or more rightangle bars, D, and upon the external or outer and inner faces of which are secured a series of insulators, L, by screws passing through the same, or in any other desired manner, the telegraph or electric wires T being stretched through or between the said frames D and secured to the said insulators L, as heretofore practiced. It will be seen and understood that the said horizontal cross-bars D have each end or opposite ends fitted within the notches or cavities formed within the upper edges of the lower half or section of pipe, and the lowcrend of the vertical crossbar or pieces D fit within a cavity formed in the in terior surface of the pipe at the bottom thereof, and that the said supporting-frames D O H are placed in position and the telegraph-wires T stretched and secured thereto before the upper half-section of pipe is placed thereon, it

ceive the upper ends of the said vertical bars or projecting ends O of the supporting-framc, when said upper half is placed on the said lower portion and the two halves secured together by screw-bolts l", as shown. Thus it will be seen and understood that any one of such upper halt-sections may be removed to inspect or repair any portion of the said electric wires T. It will be seen that by the peculiar construction and formation of the said supporting crossframes composed of the parts 1) O H a very large number of electric wires may be inclosed within a limited space of convenient interior diameter of pipe, and each wire completely insulated, and at the same time permit of ready and easy inspection of the i said wires for repairs, removal, or insertion of others until the available space to secure the insulators L to the supporting crosst'rame had become filled to its greatest. capacity.

Any well-known form of insulator may be employed that is adapted to this kind of underground pipe for electrical wires, and the sections of pipe may be constructed of iron or any other suitable material, and of such length and size as circumstances may require. The cross frames may be constructed of wood or metal and be placed in each section of pipe provided to receive the supporting ends, or at a less or greater distance, the'wires being run or stretched sufficiently to prevent their sag ging between the supporting-frames.

pipes may be run at angles, or with branches. Having thus described my invention, what I claim is-- i The combination, with the sectional pipe A, having end flanges, B, and horizontal flanges E, ofthe supporting-frames D, consisting of the concentric circular portions H, and right-angle intersecting bars D, having projections (J, and provided with insulators L, substantially as de scribed, as and for the purposes set forth.

ALEXANDER SLOAN. Witnesses G-Eo. G. YOUNGMAN, FREDRIK ROTH.

It will be understood that the inclosing being provided with internal cavities to re 

